refactor got_patch / got_worktree_patch_complete let got_patch own fileindex_path and call got_worktree_patch_complete only if got_wokrtree_patch_prepare hasn't failed. suggested by stsp@

got patch: avoid open/sync/close the fileindex over and over again Instead of flushing the fileindex after every patch in the patchfile just reuse the same fileindex and sync it only at the end of the patch operation. This speeds up 'got patch' on large repositories by quite a lot.

inline struct got_object_id in struct got_object_qid Saves us from doing a malloc/free call for every item on the list. ok op@

plug a small memleak on error in got_pack_create()

avoid malloc/free for duplicate check in got_pathlists_insert() ok op@

revert "Skip poll(2) if an imsgbuf has a non-empty read buffer" imsg_read() will call recvmsg() on the file descriptor regardless of the read buffer's state, so we should ensure that data is ready. The read buffer is used by imsg_get(), not imsg_read(). We already call imsg_get() before imsg_read(), and call the latter only if imsg_get() returns zero.

Skip poll(2) if an imsgbuf has a non-empty read buffer.

imsg_add() frees its msg argument on error; avoid double-free in error paths

batch up tree entries in imsg instead of sending one imsg per tree entry This speeds up loading of trees significantly. ok op@

parse tree entries into an array instead of a pathlist Avoids some extra malloc/free in a performance-critical path. ok op@

prevent an out-of-bounds access in got_privsep_recv_tree()

plug memory leak in an error path of got_privsep_recv_tree()

make got_privsep_recv_tree() reject trees with less than zero entries

rework logic in got_privsep_recv_tree() to avoid an ugly 'goto' no functional change

got patch: switch from fseek() to fseeko(), use unary minus while here ok op

got patch: fail when reading empty hunks

fix cross-compilation; diff from Leah Neukirchen (thanks!), ok thomas

portable: set next version

CHANGELOG for 0.70 Update the CHANGELOG for the 0.70 release.

portable: include sha1.h portably Don't directly include sha1.h as this isn't always in the same location across systems.

got patch: resolve paths from the current working directory this allow to apply patches from subdirectories of the work tree root. Prodded by naddy@, ok stsp@.

bump version number

CHANGES for 0.70

map delta cache file into memory if possible while writing a pack file with a fix from + ok op@

fix load_object_ids() such that packing tags works if zero commits are packed reported by jrick and op